Alcántara

As of September 7, 2026, Alcántara is filled to 63.8% of its total capacity, holding roughly 2,015 hm³ of water out of a maximum 3,160 hm³. At this level the reservoir is within its normal operating range. Of that total, about 2,844 hm³ is usable (live) storage.

Over the most recent week on record the fill level has fallen by 4.0 percentage points, and it is 23.8 points below its level on the same date a year earlier.

Across the readings we hold for Alcántara — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 42.7% (October 18, 2022) to a high of 99.3% (June 10, 2025). On average the reservoir is fullest around April and at its lowest around November.

It is operated by CHT primarily for multiple purposes. It lies within the Tajo basin at 39.732°N, 6.878°W.